Anti-aging performance improvement and enhanced combustion efficiency of boron via the coating of PDA  

作　　者：Shuai Ma Qinghai Shu Mengyang Zhang Hongyu Huang Yansong Shi Xijuan Lv Shuai Zhao 

机构地区：[1]School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,100081,China [2]Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement(MOE),Beijing Key Lab of Nanophotonics&Ultrafine Optoelectronic Systems,School of Physics,Beijing Institute of Technology,Beijing,100081,China [3]Tangshan Research Institute of Beijing Institute of Technology,Tangshan,063000,Hebei,China

出　　处：《Defence Technology（防务技术）》2024年第3期399-410,共12页Defence Technology

摘　　要：Boron is an ambitious fuel in energetic materials since its high heat release values,but its application is prohibited by low combustion efficiency and oxidization during storage.The polydopamine(PDA)was introduced into boron particles,investigating the impact of PDA content on the energetic behavior of boron.The results indicated that the PDA coating formed a fishing net structure on the surface of boron particles.The heat release results showed that the combustion calorific value of B@PDA was higher than that of the raw boron.Specifically,the actual combustion heat of boron powder in B@10%PDA increased by 38.08%.Meanwhile,the DSC peak temperature decreased by 100.65℃under similar oxidation rate compared to raw boron.Simultaneously,the B@PDA@AP and B@AP composites were prepared,and their combustion properties were evaluated.It was demonstrated that B@10%PDA@AP exhibited superior performance in terms of peak pressure and burning time,respectively.The peak pressure is 12.43 kPa more than B@AP and burning time is 2.22 times higher than [e-mail],the coating of PDA effectively inhibits the oxidization of boron during storage and enhances the energetic behavior of boron and corresponding composites.

关 键 词：Boron particles POLYDOPAMINE Anti-aging performance improvement Heat release 

分 类 号：TK16[动力工程及工程热物理—热能工程]